The generator matrix

 1  0  0  0  1  1  1  0  0  4  1  1  1  0  1  4  1  1  1  1  4  0  6  0  4  1  1  1  1  2  1  4  4  6  2  6  1  1  1  2  1  2  1  1  6  1  1  1  2  0  1  1  1  6  1  2  1  1  2  1  1  6  1  4  4  1  0  1  6  6  2  4  1  2  6  2  0  1  1  2  1  2  0  6  1  4  4
 0  1  0  0  0  1  1  1  4  1  1  0  5  1  0  1  4  7  7  6  2  1  1  2  1  2  5  2  5  6  2  4  1  1  1  6  4  3  3  1  7  1  5  1  1  3  0  3  2  1  1  0  5  1  3  1  4  2  4  0  7  1  6  1  4  6  1  2  4  1  4  6  4  1  2  1  0  6  7  1  1  0  0  1  7  1  1
 0  0  1  0  1  4  5  1  1  0  0  4  1  7  3  3  1  1  0  4  1  4  3  1  6  3  3  6  2  4  1  1  7  1  4  1  6  1  2  2  5  7  1  2  2  4  3  3  1  5  6  6  7  7  5  0  7  4  6  6  2  4  1  1  6  7  7  0  0  2  1  0  3  5  0  6  4  2  3  3  7  1  1  1  0  6  0
 0  0  0  1  4  0  4  4  1  7  3  7  7  3  3  4  3  0  7  4  5  1  5  2  0  0  1  5  4  1  3  7  6  5  3  6  2  6  5  1  1  7  2  5  6  2  2  1  0  7  6  1  0  6  3  5  1  5  1  7  3  2  1  1  1  7  2  2  1  1  0  1  2  7  1  7  1  2  0  3  2  2  6  6  5  7  0

generates a code of length 87 over Z8 who´s minimum homogenous weight is 81.

Homogenous weight enumerator: w(x)=1x^0+298x^81+226x^82+494x^83+322x^84+600x^85+199x^86+424x^87+156x^88+346x^89+155x^90+258x^91+72x^92+160x^93+46x^94+124x^95+48x^96+60x^97+41x^98+36x^99+8x^100+4x^101+5x^102+8x^103+1x^104+4x^105

The gray image is a code over GF(2) with n=348, k=12 and d=162.
This code was found by Heurico 1.11 in 200 seconds.